Tellstick Duo Temperature sensor

[jamesst]

Hi,
I recently bought Tellstick duo. I had at home LaCrosse teperature humidity 433 MHz sensor. I can see in Event ghost log that Tellstick Duo is picking info from the sensor:

TellStickDuo.RawEvent: class:sensor;protocol:fineoffset;model:temperaturehumidity;temp:-88.2;humidity:0x77;id:0x7;Duo_ID:3
TellStickDuo.fineoffset.temperaturehumidity.7.Humidity: '119|2011-12-22 20:27:01'
TellStickDuo.fineoffset.temperaturehumidity.231.Temperature: '-83.8|2011-12-22 20:28:00'

Can somebody help me to create an Macro to turn this info in degrees celzius and humidity in % and than based on that to create an event.

Example:
During daytime the temperature from one of my sensors are below xx degrees I would like to star a certain event. If the temperature is higher I┬┤d like to trigger an other event.

Unfortunaly i have no knowladge in Python.

Thanks

[krambriw]

Hi, the problem is not to create a macro that does what you wan't, I will help you with that. But the problem is the algorithm for humidity & temperature. Do you know this? For other known devices like the UPM/ESIC the calculation is as follows:

Code: Select all

 * Temp (C) = RawValue / 16 - 50
 * Rain (total mm) = RawValue * 0,7
 * Wind Speed (mph)= RawValue (* 1/3,6 for km/h)
 * Humidity (%) = RawValue / 2
 * Wind direction (deg) = RawValue * 22,5
 

The sensor sends (or Telldus Duo gives) for temperature '-88.2' and for humidity '119'. This can't be the real values?

What you can do is to look at the display of the sensors and make a note of what values they are showing and what is actually sent to EvenGhost at the same moment. Try to get some readings with different values and then maybe it will be possible to find the algorithm.

Best regards, Walter

[jamesst]

Hi Walter,

Thank you for your help. I get what you mean, but I don't have the required algorithm.
Give me some time and I will note the sensor displayed values and corresponding events in EG log.

Hopefully we will be able to find the algorithm ( actually I have two of this sensors, and it would be disapointing to throw them away).

Once more thanks for your replay,

Best regards
James

[jamesst]

Hi Walter,

Attached are Event logs and under are displayed temperatures at that moment. I don't know if this can be of any help at all.
If not can you recomend temp. sensor that can be used with Tellstick Duo plugin.

Thanks for your help

[krambriw]

Dear James, I can see that you spent some considerable effort in capturing the data. Unfortunately, I'm sorry to say, I do not see any specific pattern in the readings. I can't see any algorithm behind this. I guess the Duo is just passing on something that happens to be there.
As you have noticed, the support for temperature and hunimdity sensors are not so good at the moment. It is said it will come.
Personally I have and preferre the sensors from Oregon. I have a number of the model type THGR238N. I'm also waiting for support of those but I also have the RFXCOM that already supports them very well.

Best regards, Walter

[jamesst]

Hi Walter,

Thanks for your time, I eather coudn't see any pattern in this data. At least we tried.
Hope that Telldus guys will come up with better support for this device.

Regards,
James

[jamesst]

Hi Walter,

I don't wont to be boring, but I have recently came across this : http://www.f6fbb.org/domo/sensors/tx3_th.php, http://www.f6fbb.org/domo/sensors/
This are exactly the sensors that I own. Can this be of any help to decode the algorithm of this sensors?

thanks

[krambriw]

Hello James,
This information would be very suitable for Telldus because it is in the firmware they need to add decoding of this protocol. In EG I can unfortunately do nothing because the low level information is not passed on from TelldusCenter.

Best regards, Walter

[jamesst]

Thanks Walter,

I have posted my question at Telldus forum.
Regards
James